fix regression after 4d43a7b4
caused by mixed usages of `SshExecutable.IDEA_SSH` and `GitVcsPanel.IDEA_SSH`

Because "yes" is default, and "cancel" can be pressed with Esc.

Relates to IDEA-196963

IDEA-196963

"&" is interpreted as a mnemonic and disappears causing a confusion of the "Abort Rollback" button name.

IDEA-196963

RedundantCastUtil: null-check added for conditional branch types (EA-126439 - IAE: PsiType.$$$reportNull$$$)

After-review fix for CPP-13956

We can't distinguish invalid password and request for the second remote,
so we can't properly implement the feature.

Actual and expected are in wrong order.
Fixed on tcmessages side, test added.

Use swapdiff in pytest.ini to switch it back

IDEA-197606

add loadElementAndKeepBoundaryWhitespace as easy workaround for not yet investigated regression (boundary whitespace is required for XCode project templates)